On the 23rd of August 2012 I was travelling back home from Leeds to London Kings Cross on a train specific ticket. In a rush as my connecting train had been delayed, I did not pay full attention to the board, and accidentally got on the wrong train. I was travelling with friends and, being engaged in conversation, and relieved that I was on the train, I did not realise my error until the ticket inspector told me when he checked my ticket after Wakefield. I apologised and offered to get off at the next stop and board the correct train when it arrived, which I thought would be a reasonable cure for an innocent mistake. However he told me I could not, and would have to pay for a full priced ticket. Being only 17, needless to say I did not have £124.50 in my wallet, so he filled out an unpaid fare notice for me. I do not have anywhere near the £124.50 I need, so I thought it would be best to dispute the claim as soon as possible, I sent a letter explaining in slightly more detail what I have already said here. As of yet I am awaiting a response. can anyone give me any advice? Do I have any basis to keep disputing? Is it better to somehow find the money to pay? Seeing as how I had a valid and paid for ticket, should that price be deducted from what I need to pay, ie, go down by about £30? Any help would be greatly appreciated, as I have no idea where I stand! Thanks in advance, Charlie